I'm kinda new around here, first post and topic even though I've been playing for agesunder different names.As now I've been playing for a while, I had the idea many times to change the music for myself.

So I've grabbed Audacity, converted some .mp3 songs into .wav and tried to change the files in "sg_pak0.pk3" with the ones I converted. (menu, track(0), so on..)

Now, my problem is that, the game still uses the default ones.For example I load the menu and not my edited menu.wav file starts to play.

You may modify the music/the sg_pak0.pk3 for your single player games, but as soon as you go online, your client is to requested to have the original SG1.1 sg_pak0.pk3. If this file isn't available anymore, you either get disconnected or you are asked to re-download the whole file again. If you wonder, where the game might download copies of the pk3, read this post.

My advice: if you want to play custom music, just start a media player before you go into the game. If you want to contribute music to the game, submit them to this community and ask for inclusion.